Abstract:
:While the nasal mucosa is a potentially useful site for human immunization, toxin-based nasal adjuvants are generally unsafe and less effective in humans. Safe mucosal adjuvants that activate protective immunity via mucosal administration are highly dependent on barrier antigen sampling by epithelial and DCs. Here, we demonstrate that protein antigens formulated in unique oil-in-water nanoemulsions (NEs) result in distinctive transcellular antigen uptake in ciliated nasal epithelial cells, leading to delivery into nasal associated lymphoid tissue. NE formulation also enhances MHC class II expression in epithelial cells and DC activation/trafficking to regional lymphoid tissues in mice. These materials appear to induce local epithelial cell apoptosis and heterogeneous cytokine production by mucosal epithelial cells and mixed nasal tissues, including G-CSF, GM-CSF, IL-1a, IL-1b, IL-5, IL-6, IL-12, IP-10, KC, MIP-1a, TGF-β, and TSLP. This is the first observation of a nasal adjuvant that activates calreticulin-associated apoptosis of ciliated nasal epithelial cells to generate broad cytokine/chemokine responses in mucosal tissue.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Makidon PE,Belyakov IM,Blanco LP,Janczak KW,Landers J,Bielinska AU,Groom JV 2nd,Baker JR Jrdoi
10.1002/eji.201142346subject
Has Abstractpub_date
2012-08-01 00:00:00pages
2073-86issue
8eissn
0014-2980issn
1521-4141journal_volume
42pub_type
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